MC
Mary Corcoran — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this Mary Corcoran across the 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed) — first a daughter (b.~1914), then head of a 7-person household.
Age 26
b. ~1914
Female
Daughter
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | Corcoran |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Additional Details | |
| Occupation | Secretary |
| Industry | Retail Food Co |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 611 |
| Highest Grade | H 2 |
| 1935 Residence | Same House |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Secretary |
| Township / Ward | Jersey City |
| Est. Birth Year | ~1914 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Francis Corcoran | Son | — | 19 | ~1921 |
| Katherine Corcoran | Spouse | — | 47 | ~1893 |
| Mary Corcoran | Daughter | — | 26 | ~1914 |
| Walter Corcoran | Son | — | 21 | ~1919 |
| John Corcoran | Head | — | 52 | ~1888 |
| Joseph Corcoran | Son | — | 23 | ~1917 |
| William Thumm | Other | — | 75 | ~1865 |
Census Appearances
1930
Hudson, New …
Daughter, age 15
Hudson, New Jersey · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Corcoran |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Hudson-County, New …
Daughter, age 26
Hudson-County, New Jersey · implied b. ~1914 — 7 household members
| Surname | Corcoran |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Occupation | Secretary |
| Industry | Retail Food Co |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 611 |
| Highest Grade | H 2 |
| 1935 Residence | Same House |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Mary Corcoran across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Corcoran
Daughter · 1940 · age 26 · b. ~1914 · New Jersey
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Sibling
Francis Corcoran
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Corcoran
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Corcoran
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Hudson-County, New Jersey
Open full size
1940 US Federal Census — Hudson-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02405-00525)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary F. Ryan | 55 | Head | — | New Jersey |
| 42 | Virginia Ryan | 27 | Daughter | Tel. Operator | New Jersey |
| 43 | Frederick A. Ross | 51 | Head | Salesman | New York |
| 44 | Mabel B. Ross | 46 | Wife | — | New Jersey |
| 45 | John Corcoran | 52 | Head | Stillman | New Jersey |
| 46 | Katherine Corcoran | 47 | Wife | — | New Jersey |
| 47 | Mary Corcoran THIS PERSON | 26 | Daughter | Secretary | New Jersey |
| 48 | Joseph Corcoran | 23 | Son | Clerk | New Jersey |
| 49 | Walter Corcoran | 21 | Son | Clerk | New Jersey |
| 50 | Francis Corcoran | 19 | Son | — | New Jersey |
| 51 | William Thumm | 75 | Father in Law | — | Germany |
| 52 | Bertha Armbruster | 80 | Head | — | New York |
| 53 | Richard H. Schmidt | 63 | Head | Superviser | Germany |
| 54 | Louise A. Schmidt | 65 | Wife | — | Germany |
| 55 | Richard F. Schmidt | 43 | Son | Carpenter | New Jersey |
| 56 | Caroline B. Reindel | 66 | Head | — | Germany |
| 57 | Walter E. Reindel | 35 | Son | — | New York |
| 58 | Henri F. Van Der Moot | 28 | Head | Welder Helper | Michigan |
| 59 | Jane E. Van Der Moot | 26 | Wife | — | New Jersey |
| 60 | Harry J. Van Der Moot | 5 | Son | — | New Jersey |
| 61 | Nancy L. Van Der Moot | 3 | Daughter | — | New Jersey |
| 62 | Charles H. Kandely | 67 | Head | Retired On Pension | England |
| 63 | John E. Ellenberger | 36 | Head | Salesman | New Jersey |
| 64 | Edna H. Ellenberger | 35 | Wife | — | New Jersey |
| 65 | Arthur R. Ellenberger | 11 | Son | — | New Jersey |
| 66 | Donald E. Ellenberger | 9 | Son | — | New Jersey |
| 67 | Thomas J. Torpey | 46 | Head | Police Lieut. | New Jersey |
| 68 | Mary A. Torpey | 45 | Wife | — | New Jersey |
| 69 | Lorna M. Torpey | 22 | Daughter | Bookkeeper | New Jersey |
| 70 | Margaret M. Torpey | 20 | Daughter | Stenographer | New Jersey |
| 71 | Thomas J. Jr. Torpey | 18 | Son | Newspaper | New Jersey |
| 72 | Matthew D. Torpey | 12 | Son | — | New Jersey |
| 73 | Mary D. Torpey | 2 | Daughter | — | New Jersey |
| 74 | Leonard Wright | 45 | Head | Teacher | England |
| 75 | Marion H. Wright | 44 | Wife | — | Mass. |
| 76 | Robert B. Wright | 6 | Son | — | New Jersey |
| 77 | Richard L. Wright | 2 | Son | — | New Jersey |
| 78 | John J. Andrews | 31 | Head | Comptroller | New Jersey |
| 79 | Agnes M. Andrews | 30 | Wife | — | New Jersey |
| 80 | Lillian M. Fuller | 34 | Sister in Law | — | New Jersey |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)